Dynamic Analyses of a High-Speed Train Secondary Suspension System Equipped with Semi-Active Dampers Operating on Curved Tracks

作者：Wu Ye Ee; Lee Wen Feng^*; Young Tyau Her; Liao Kuen Liang; Chien Ming Hung

来源：Journal of the Chinese Society of Mechanical Engineers, 2017, 38(5): 499-512.

• Semi-active skyhook damper
• high-speed train
• curved track
• wheel/rail interaction

When a train goes through a curve, the more the train speed increases, the greater the centrifugal force. If only the cant of the outer rail is used and the balancing centrifugal force is still insufficient, the speed of the train through the curve should be restricted. However, if suspension changes are used to compensate for the inadequacy of the cant, the speed of the train can be increased. This study undertook dynamic analyses of a semi-active suspension system for high-speed trains operating on curved tracks. Through the Newmark Method, the dynamic responses could be obtained at each time point to indicate the effectiveness of conventional dampers and the semi-active damper. Simulation results showed that the semi-active damper can achieve up to a 30% suppression of lateral displacement and lateral acceleration. This result indicates that semi-active control can increase passenger comfort by reducing the car body vibrations of vehicle systems operated on curved tracks. The smaller the radius of the curvature, the greater the lateral acceleration that will be produced, while the efficiency of using a semi-active skyhook shock absorber will also be more obvious. This also increases the stability and safety of vehicles operating at high speeds on curved tracks.

• 出版日期2017-10